Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 5.5, Problem 1EQ
Summary Introduction
To describe: The observations about particular cell types in the human body that were the basis of experimental strategy.
Introduction: The passive transports involve downhill movement of molecules without the expenditure of energy. The downhill transport means the movement of the molecules from the region of the high concentration to the region of their low concentration. It has a slower rate of diffusion because of its dependency to the difference between the concentrations of the solute.
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Animal cell cultures usually require 5% carbon dioxide in the incubator. This gas along with sodium bicarbonate found in the culture medium helps to regulate what property of the cell medium? (i.e. what environmental condition does carbon dioxide/sodium bicarbonate regulate?)
Table 4. 1.a Diffusion through a Semi-permeable Membrane.
Observation
Before Immersion
After 15 minutes of Immersion
Starch solution in the cellophane
Iodine in the beaker
Table 4.1.b Reaction of Starch to lodine Solution
Starch in Iodine Solution
Table 4.2. Osmosis
Solutions
Test Tube 1: 0.9% NaCl
(Isotonic)
Observe Shape of Red Blood Cells
Drawing
Test Tube 2: Distilled Water
(Нурotonic)
Test Tube 3: 3% NaCl
(Hypertonic)
Conclusion
Identify (state whether each item is an example of diffusion, osmosis,
filtration, or active transport)
1. Movement of water from an area of lower impermeant solute concentration to an
area of higher impermeant solute concentration.
2. Dye particles spread evenly through water.
3. Starch particles pass through a paper membrane.
4. A cell uses energy to "pump" sugar molecules from its external environment.
5. Water in cell moves out into a concentrated salt solution bathing the cell.
Chapter 5 Solutions
Biology
Ch. 5.1 - Core Skill: Modeling The goal of this modeling...Ch. 5.2 - Prob. 1CSCh. 5.3 - Prob. 1CCCh. 5.3 - Prob. 2CCCh. 5.4 - Prob. 1CSCh. 5.4 - Prob. 2CSCh. 5.4 - Lets suppose the inside of a cell has a solute...Ch. 5.5 - What is the purpose of gating?Ch. 5.5 - Prob. 1EQCh. 5.5 - Prob. 2EQ
Ch. 5.5 - Prob. 3EQCh. 5.6 - What is the function of the protein coat?Ch. 5 - Prob. 1TYCh. 5 - Which of the following events can never be...Ch. 5 - Lets suppose an insect, which doesnt maintain a...Ch. 5 - Prob. 4TYCh. 5 - Prob. 5TYCh. 5 - Prob. 6TYCh. 5 - Prob. 7TYCh. 5 - Prob. 8TYCh. 5 - Prob. 9TYCh. 5 - Large particles or large volumes of fluid can be...Ch. 5 - With your textbook closed, draw and describe the...Ch. 5 - Prob. 2CQCh. 5 - Prob. 3CQCh. 5 - Prob. 1COQCh. 5 - With regard to bringing solutes into the cell...
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